Troy-Bilt Mustang Z54 XP 725cc Zero-Turn Rider. Mustang Z54 XP 725cc Zero-Turn Rider – 17ARFACWA66. Powerful 24 HP/725cc twin-cylinder KOHLER engine delivers quiet, balanced performance. Full-length, fully welded, 2 in. Triple blade cutting deck with two anti-scalp deck wheels and nose roller help prevent turf damage and is engineered to deliver a clean, even cut. Dual hydrostatic transmissions with lap bar control deliver true zero-turn performance and are designed to help quickly cut and maneuver around obstacles while mowing. High-back seat and foam-grip steering controls help provide a comfortable ride. 8 in x 5 in. WHY OUR CUSTOMERS KEEP SHOPPING WITH US. SECURE & HASSLE FREE SHOPPING. We are available 7 days a week. All corded products are designed to work with North American 110/120V outlets only.